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| 水分胁迫对番茄生长及光合系统结构性能的影响 | |
| 引用本文： | 王学文,付秋实,王玉珏,张京红,路河,郭仰东.水分胁迫对番茄生长及光合系统结构性能的影响[J].中国农业大学学报,2010,15(1):7-13. |
| 作者姓名： | 王学文 付秋实 王玉珏 张京红 路河 郭仰东 |
| 作者单位： | 1. 中国农业大学,农学与生物技术学院,北京,100193 2. 北京农业广播大学,平谷分校,北京,101200 3. 北京昌平农业技术推广中心,北京,102200 |
| 基金项目： | 国家“973”计划项目(2009CB119000);;国家科技支撑计划(2007BAD57B04) |
| 摘 要： | 以普通番茄和樱桃番茄为试材,分别在正常供水和水分胁迫条件下,研究不同生态型番茄生长指标及光合系统结构的变化。水分胁迫显著抑制了番茄的生长,叶片水势及叶片相对含水量显著下降,普通番茄和樱桃番茄单株总干重分别下降了59.36%和51.17%,二者的根冠比分别上升了37.93%和29.17%。水分胁迫后,叶片净光合速率(Pn)、气孔导度(Gs)、蒸腾速率(Tr)、胞间CO2浓度(Ci)、PSⅡ光化学量子效率(ΦPSⅡ)、光化学猝灭系数(qP)及光合电子传递速率(ETR)均下降,非光化学猝灭系数(NPQ)和水分利用效率(WUE)提高。水分胁迫后叶片气孔密度、气孔大小均有所下降,大部分气孔关闭且深陷。叶绿体变大变圆,基粒片层排列紊乱,淀粉粒减少或消失。 |
| 关 键 词： | 番茄 水分胁迫 光合作用 叶绿素荧光 气孔特性 叶绿体超微结构 |
| 收稿时间： | 2009/5/14 0:00:00 |
Effects of water stress on growth and photosynthetic system characters of Lycopersicon esculentum L. |
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| WANG Xue-wen,FU Qiu-shi,WANG Yu-jue,ZHANG Jing-hong,LU He and GUO Yang-dong.Effects of water stress on growth and photosynthetic system characters of Lycopersicon esculentum L.[J].Journal of China Agricultural University,2010,15(1):7-13. | |
| Authors: | WANG Xue-wen FU Qiu-shi WANG Yu-jue ZHANG Jing-hong LU He and GUO Yang-dong |
| Institution: | 1.College of Agronomy and Biotechnology/a>;China Agricultural University/a>;Beijing 100193/a>;China/a>;2.Beijing Agricultural Radio University/a>;Beijing 101200/a>;3.Beijing Changping Agro-Technical Extension Centre/a>;Beijing 102200/a>;China |
| Abstract: | The experiment was conducted under two water levels: no stress(75%-80% of field capacity),stress(30%-40% of field capacity).The changes of growth and photosynthetic system characters of tomato were investigated.The results showed that,under the water stress condition,the growth of the plants was inhibited,leaf water potential and leaf relative water content decreased.The total plant dry weight declined significantly and the reduction was 59.36% for Meifen-2 and 51.17% for Hongsheng,respectively.The root/sho... |
| Keywords: | chlorophyll fluorescence chloroplast ultrastructure photosynthesis stomata character tomato water stress |
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